Android camera app with Xamarin.Android

Hi everyone. A few days ago I was willing to implement camera functionalities in my Xamarin.Android application, as usual I went around to get info how to implement this on the internet, and here is a small sample which demonstrate how to build a simple camera app with Xamarin.Android which captures an image and saves it on your mobile device. Most of the knowledge I used in building this sample is gotten from this documentation.

Here, we are requesting permissions to access the camera, read and write to the phone’s external storage.

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Implementing the Camera functionality

Camera preview

We are going to create a View which will display the images directly seen from the camera into our app. This view will inherit from the SurfaceView class. This view will also serve as call-back when the view is created, destroyed …

Picture callback

After taking a picture with the camera, there is a class which we will implement which will serve as callback and it is in tehis calss that the picture taken will be saved. This class will inherit from Camera.IPictureCallback. Here is its implementation.

The camera fragment

Let’s come back to the camera fragment where every thign is coordinated, we will add a button to the layout of this fragment in my case, this button has an id of snapButton. This button when pressed will take the picture.

Add the Camera Preview we created to the frame layout in the fragment’s layout. this is done as follows :

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